Keyless lock



July 14, 192'5.

S. KORNHABER ET AL KEYLESS LUCK Filed Nov. 26. 1923 Jaya.

Z/ 2 2 5' /Z i 1 s a 1 d 1 /9 di 2- d 9 9 a $0/ i $2/ Theconstructional-form shown in Figs. 2 and 4 differs from that shown inFigs. 1, 3,5 and 6 to the extent that the central part 2 of the casingis thicker and that the part thereof situated between the rings 18, 19reaches as far as parts 1, 3 of the casing. ln this case the sleeve 24,which is situated in the boring in part 2 of the casing is naturallydispensed with. Y

The constructional form in accordance with Figs. 7, 8 and -9 differsfrom the former constructions to the extent that inthis case the sleevesof the ratchet gear 10, 11 are not mounted in parts land '3 of thecasing but in the central part 2 of the casing, for which reason parts 1and 3 are solid and the central part 2 of the casing is hollow `in orderto receive the ratchet sleeves 10,711 and the ratchets 24 which areactuated by the springs or pawls 23. Here also the parts of the casingare held together by a closing plate 5, which is secured by means of thescrew 4 which is surrounded by a spiral spring 22. lIn this case alsothe sleeves 10 and 11 are fitted internally with a pin 17. In thisinstance, the face of the sleeves 10, 11 is smooth, while a pin isfit-ted on the circumference of the sleeves which projects beyond thecasing 2, the said pin working in conjunction with grooves 26 providedin the wall of the boring of the rings 18, 19. (See Fig. 11.)

In all the above constructional formsthe u per surface of part 1 ofthecasing is provided with a recessed portion 27.

The lock according to thepresent invention is completed by the bow 28,both Shanks of which are provided with longitudinal grooves 29 andcircumferential groovesBO,

The method of operating the lock is as follows: y

The rings 18, 19 are first of 'all set to the previously determinedfigure. For this purpose the closing plate 5 is turned transversely topart 1 of the casing. Part 1 of the Casin now rises under the action ofthe spira spring 22, so that the rings 18, 19 can be -turned to theleft, without their teeth engaging in the toot-hing 13, 14 of thesleeves 10, 11, that is to say; the sleeves 10, 11 do not turn withthem. Then the sleeves 10, 11

are in the position of rest the pins 17 in their interior, are oppositeto the longitudinal groove 29 in the'bow 28,'so that no obstacle existstothe insertion of the bow into the lock. Thus, when the rings 18, 19have been set, with the screw 4 loosened, the screw 4 is tightened uponce more. The ratchet wheels of the rings 18, 19 now-` engage with theratchet wheels 13, 14 on `the face of the sleeves 10, 11. When the rings18, 19 are set in posit-ion the bow 28 is inserted, in which process thepins 17 slide along in the longitudinal grooves 29. When the bow 28 isfully inserted, the rings 18, 19 are turned to the right, and the lockis thus closed, as the sleeves 10, 11 rotate with the rings 18, 19, andthe pins 17 enter the circumferential n grooves 30 in the bow 28.

'until the nose-pieces 2O thereon come under the nosepieces 21 on theparts of the casing, which can be detected in the darkwith the finger.vWhen this is effected, the rings 18, 19 are turned further to the rightso as to set them to the previously determined figure. The friction ofthe spring 23 rubbing against the teeth of the sleeves 10, 11,"willcause a noise during the rotation of said rings. But, as a tooth 12corresponds to each figure, after the rings 18, 19 have been set so thatthe nose pieces 20, 21 are in line, they must be still further turned sothat the number of clicks produced corresponds to theV previouslydetermined figure on the ring. For eX- ample, if one ring is set to theFigure 6, that ring will be adjusted to the figure required after sixclicks. If the rings 18, 19 should lbe turned backwards in consequenceof the action of the springs 23, the rings 18, 19 can be set not only byhearing, but also by impact, that is to say: by the sense of touch.

On the same pattern it is also possible to lconstruct locks suitable fordoors, boxes and other articles of furniture.

We claim:

1. A keyless lock of the kind which can be set without removing theparts thereof and can be-opened by means of hearing or touch and having'a plurality of casing portions `assembled by a screw and characterbearing rings arranged therebetween, characterized by a casing closed bya pivotal closing pla-te and by sleeves carried by the rings and havingratchetv teeth upon their circumferential surfaces.

2. A keyless lock of the kind which can be set without removing theparts thereof and can lbe opened by means of hearingy or touch andhaving a plurality of casing portions assembled by a screw and characterbearing rings arranged therebetween, characterized by a casing closed bya pivotal closing plate, sleeves carried by the rings and having ratchetteeth upon their circumferentialsurfaces, said teeth being engaged bysprings secured to a casing portion, substantially as and for thepurpose stated.

3. A keyless lock of the kind which can be set without removing theparts thereof and can be opened by means of hearing or touch and havinga plurality yof casing por tions assembled by a, screw and character a`spiral spring arranged between the pivotal bearing rings arrangedtherebetween, charolosing plate and a casing portion, subacterzed by aeasing closed by a pivotal stantally as and for the purpose stfitecl.Vclosin@ plate sleeves carried by the rinfrs 5 and hving rttehet teethupon their eircuri- SAMUEL KORN ferental surfaces, said teeth beingengaged 1 i DLSIDEB SAAHL by springs secured to a casing portion, andEMIL NADOR.

